Finding the Fourth Proportional to 85,716.95, 128,565.18 and 22,541.99
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Solution
The fourth proportional to 85,716.95, 128,565.18 and 22,541.99 is: 33,810.29
Step by Step Solution
- Step 1: Write the proportion equation
85,716.95 : 128,565.18 = 22,541.99 : x - Step 2: Convert to fraction form
85,716.95/128,565.18 = 22,541.99/x - Step 3: Cross multiply
85,716.95x = 128,565.18 × 22,541.99 - Step 4: Simplify right side
85,716.95x = 2,898,115,001.91 - Step 5: Solve for x
x = 2,898,115,001.91/85,716.95 - Step 6: Final answer
x = 33,810.29
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.